You may embed videos from the following providers archive, bliptv, dailymotion, google, guba, imeem, lastfm, livevideo, metacafe, myspace, revver, sevenload, spike, tudou, twistage, ustream, ustreamlive, vimeo, voicethread, yahoomusic, youtube, zzz_custom_url. Just add the video URL to your textarea in the place where you would like the video to appear, i.e. http://www.youtube.com/watch?v=pw0jmvdh.
Web page addresses and e-mail addresses turn into links automatically.
Lines and paragraphs are automatically recognized. The <br /> line break, <p> paragraph and </p> close paragraph tags are inserted automatically. If paragraphs are not recognized simply add a couple blank lines.
To post highlighted source code snippets, surround them with <pre>...</pre>, <pre><code>...</pre></code> or <code>...</code> tags.